Big Block Crate Engine - 454HO

Chevrolet Performance’s 454 HO crate engine offers strong Big-Block torque —500 lb.-ft.—to fit almost any builder’s budget. The foundation is a brand-new, updated cylinder block, which incorporates many strength and performance design  enhancements to make it a smart and economical alternative to rebuilding.

We also added an all-forged reciprocating assembly for greater durability, a roller camshaft that optimizes performance and a set of deep-breathing rectangular-port iron cylinder heads. The 454 HO is delivered with a water pump, balancer, 14-inch flexplate and aluminum intake manifold. Add a carburetor, ignition system and starter and your budget Big-Block will be ready to roar. All of the necessary parts are available from Chevrolet Performance.

INSTALLATION NOTES

• Requires addition of carburetor, starter, fuel pump, distributor and ignition system (not included)
• Clutch linkage bosses are now drilled and tapped. When using cast-iron exhaust manifolds, lower head bolts may need to be replaced with bolts with shorter heads, for clearance
• Comes with an externally balanced 14" automatic transmission flexplate; use flywheel Part Number 14096987 and 11" clutch assembly for manual transmission applications
• Not intended for marine applications

TECH SPECS

• Part Number: 19433409
• Engine Type: Chevy Big-Block V-8
• Displacement (cu in): 454
• Bore x Stroke (in): 4.250 x 4.000
• Block (P/N 19170538): Cast iron with 4-bolt main caps
• Crankshaft (P/N 14096983): Forged steel
• Connecting Rods (P/N 19170198): Forged steel
• Pistons (P/N 19432034): Forged aluminum
• Intake Manifold (P/N 19131359): Dual plane
• Camshaft Type (P/N 24502611): Hydraulic roller
• Valve Lift (in): .510 intake / .540 exhaust
• Camshaft Duration (@.050 in): 211° intake / 230° exhaust
• Cylinder Heads (P/N 12562920): Iron rectangular port; 118cc chambers
• Valve Size (in): 2.190 intake / 1.880 exhaust
• Compression Ratio: 8.75:1
• Rocker Arms (P/N 19260993): Stamped steel
• Rocker Arm Ratio: 1.7:1
• Water Pump (P/N 12708488): Cast-iron, long-style
• Recommended Fuel: Premium pump
• Ignition Timing: 36° Total @ 4,000 rpm
• Maximum Recommended rpm: 5,500
• Balanced: External
• Flexplate (P/N 10185034): 14"

NOTE: Distributor with melonized steel gear MUST be used with long-blocks and partial engines with steel camshafts, or engine damage will occur.